html, body {
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: white;
}

.container {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 600px;
    height: 100%;
    margin-bottom: 40px;
}

.nav {
    display: flex;
    flex-direction: row;
    justify-content: space-around;
    align-items: center;
    border-bottom: solid 1px #DDD;

    width: 100%;
    margin-bottom: 10px;
}

.text{
    margin-right: 3em;
    font-family: 仿宋;
    font-size: 50px;
}

.icon i{
    font-size: 2em;
    margin-left: 20px;
    margin-right: 10px;
}

.book-list {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}
.line {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 500px;
    margin-bottom: 20px;
}


.book-info{
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.footer {
    display: flex;
    flex-direction: row;
    position: fixed;
    left: 50%;
    transform: translateX(-50%);
    bottom: 0;
    width: 600px; /* Same width as body */
    justify-content: space-around;
    align-items: center;
    user-select: none;
    cursor: pointer;
    padding: 10px 0; /* Add padding for better spacing */
    background-color: #fff; /* Optional: background color for footer */
    box-shadow: 0 -2px 5px rgba(0, 0, 0, 0.1); /* Optional: shadow for footer */
}

.footer .i {
    font-size: 1.5em;
    margin-right: 5px;
}
